Analog Devices Inc./Maxim Integrated DG418DJ+

Overview

DG418DJ+ from Maxim Integrated is a precision CMOS single-pole/single-throw (SPST) analog switch with normally open configuration, 35Ω maximum on-resistance, <5nA off-leakage at +85°C, and 175ns max turn-on time. It operates from ±4.5V to ±20V bipolar or +10V to +30V single supply, enabling rail-to-rail signal routing in battery-operated test equipment and communications systems.

For engineers reviewing the DG418DJ+ datasheet, DG418DJ+ pinout, DG418DJ+ application, or DG418DJ+ equivalent, key selection criteria include guaranteed on-resistance matching (3Ω max), low charge injection (10pC max), ESD tolerance (2000V min), and compatibility with TTL/CMOS logic levels across industrial temperature range (–40°C to +85°C).

Technical Context

The DG418DJ+ uses a 44V silicon-gate CMOS process to achieve stable on-resistance flatness (4Ω max) over full analog signal range and low leakage under thermal stress. Its SPST NO topology features complementary control logic with VL referenced to either V+ (CMOS) or +5V (TTL), supporting unbalanced supplies like +24V/–5V.

Switching performance is characterized by sub-175ns tON and sub-145ns tOFF with 50Ω load and 35pF capacitance, while charge injection remains ≤10pC - critical for sample-and-hold accuracy. Off-isolation rejection ratio exceeds 68dB at 1MHz, ensuring minimal crosstalk in multi-channel routing.

Key Specifications

Pinout & Package

DG418DJ+ is housed in an 8-pin plastic DIP package (0.300" width) with standard through-hole mounting. Pin 1 is the analog-switch source terminal (normally open), pin 2 is no internal connection, pin 3 is logic ground (GND), pin 4 is analog positive supply (V+), pin 5 is logic supply (VL), pin 6 is logic-level input (IN), pin 7 is analog negative supply (V−), and pin 8 is analog-switch drain terminal (D).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar analog switching applications.

Compared with ADG1418BRZ and TS5A23157DCUR, the DG418DJ+ delivers superior off-leakage performance and broader supply flexibility at the expense of higher on-resistance - making it ideal for precision, wide-dynamic-range analog routing where thermal stability and ESD robustness are prioritized over ultra-low R_DS(ON).

Availability

DG418DJ+ is available at Aetrix Electronics and suitable for test equipment, communications systems, and battery-operated data acquisition requiring stable component supply across industrial temperature range and long lifecycle support.

Supply support for DG418DJ+ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Maxim Integrated (now part of Analog Devices) designs high-performance analog, mixed-signal, and power management ICs for industrial, automotive, and communications markets.

The DG418DJ+ belongs to Maxim's precision analog switch family engineered for low-leakage, low-charge-injection signal routing in demanding test, military, and telecom infrastructure applications.

FAQ

What is the operating temperature range for DG418DJ+?

The DG418DJ+ is rated for operation from –40°C to +85°C, verified across all electrical parameters including on-resistance, leakage current, and switching times. This industrial-grade temperature range ensures reliable performance in embedded test equipment and outdoor communications hardware where ambient conditions vary significantly. The DG418DJ+ maintains <5nA off-leakage even at the maximum +85°C junction temperature.

Does DG418DJ+ support single-supply operation?

Yes, DG418DJ+ supports single-supply operation from +10V to +30V with V− connected to ground. In this configuration, the analog signal range extends from 0V to V+, preserving rail-to-rail capability. The DG418DJ+ retains all key specifications - including 35Ω max R_DS(ON), 175ns t_ON, and TTL/CMOS logic compatibility - under single-supply conditions, as confirmed in the device's Electrical Characteristics table.

How does DG418DJ+ differ from DG417DJ+?

The DG418DJ+ is a normally open (NO) SPST analog switch, while DG417DJ+ is normally closed (NC). Both share identical package, pinout, supply ranges, and core specs (e.g., 35Ω R_DS(ON), <5nA leakage), but their default states differ: DG418DJ+ blocks signal flow until enabled, whereas DG417DJ+ passes signal continuously unless disabled. This functional distinction makes DG418DJ+ suitable for safety-critical enable paths, and DG417DJ+ appropriate for fail-safe bypass configurations.

Can DG418DJ+ be used with unbalanced supplies like +24V and –5V?

Yes, DG418DJ+ supports unbalanced supplies such as +24V and –5V, provided the absolute difference between V+ and V− does not exceed +44V. This capability allows flexible integration into legacy power architectures without redesign. The DG418DJ+ maintains guaranteed on-resistance matching (3Ω max) and flatness (4Ω max) under unbalanced conditions, as specified in the device's Absolute Maximum Ratings and Electrical Characteristics sections.

What is the significance of the "J" suffix in DG418DJ+?

The "J" suffix in DG418DJ+ denotes an 8-pin plastic DIP package with commercial-grade lead finish and industry-standard JEDEC outline. This package variant is optimized for through-hole prototyping and legacy manufacturing lines. The "+" indicates Maxim's enhanced screening and packaging - including tape-and-reel option, improved ESD handling, and full compliance with RoHS and REACH directives. The DG418DJ+ is functionally identical to DG418DJE but supplied in tube format.